! Swift/XRT hardness ratio of trigger: 1090472, name: GRB 211221A
 ! T0 for this burst is Swift MET=661812549.12 s, = 2021 Dec 21 at 20:48:40.822 UT

 ! The hard band is 1.51-10 keV
 ! The soft band is 0.3-1.5 keV
 ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379
 ! There are 3 datasets: Hard, Soft, and the ratio
 ! Columns are as labelled
 ! BINMODE: GRB-like (counts)

READ TERR 1
READ SERR 2
NO	NO	NO	NO	NO
! PC -- hard data
!Time		Err (pos)	Err(neg)	Rate		Error
184.617	59.862	-70.518	2.730435	0.306945
365.161	120.021	-120.682	0.716908	0.115921
587.820	77.889	-102.638	1.214313	0.173038
794.818	211.879	-129.109	1.001419	0.114369
36401.135	31847.383	-15027.032	0.007696	0.001473
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
184.617	59.862	-70.518	0.678189	0.154340
365.161	120.021	-120.682	0.365085	0.083208
587.820	77.889	-102.638	0.506697	0.112122
794.818	211.879	-129.109	0.291686	0.062076
36401.135	31847.383	-15027.032	0.004023	0.001090
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
184.617	59.862	-70.518	4.026070	1.021927
365.161	120.021	-120.682	1.963678	0.548741
587.820	77.889	-102.638	2.396528	0.630753
794.818	211.879	-129.109	3.433216	0.829210
36401.135	31847.383	-15027.032	1.913059	0.634518